package com.sky.service.impl;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.util.List;


//菜品及口味
@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {

@Autowired
private SetmealMapper setmealMapper;
@Autowired
private SetmealDishMapper setmealDishMapper;
@Autowired
private DishServiceImpl dishService;
    @Autowired
    private DishMapper dishMapper;

    @Transactional
    @Override
    public void saveWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.insert(setmeal);
        Long id = setmeal.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes != null && setmealDishes.size() > 0) {
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(id);
            });
        }
        setmealDishMapper.insertBatch(setmealDishes);


    }
    //批量删除套餐
    @Override
    public void deleteBatch(List<Long> ids) {
    //    判断套餐是否在起售中
        for (Long id: ids){
            Setmeal setmeal = setmealMapper.getById(id);
            if (setmeal.getStatus() == 1){
                throw new RuntimeException(MessageConstant.SETMEAL_ON_SALE);
            }

            setmealMapper.deleteById(id);
            setmealDishMapper.deleteBySetmealId(id);
        }
    }
    //套餐分页查询
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        int pageNum = setmealPageQueryDTO.getPage();
        int pageSize = setmealPageQueryDTO.getPageSize();
        PageHelper.startPage(pageNum,pageSize);
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);

        return new PageResult(page.getTotal(),page.getResult());

    }
    //根据id查询套餐
    @Override
    public SetmealVO getByIdWithDish(Long id) {
        Setmeal setmeal = setmealMapper.getById(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal,setmealVO);
        //查询套餐id对应的菜品数据
        List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;


    }
    //修改套餐
    @Transactional
    @Override
    public void update(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO,setmeal);

    //    修改菜品
        setmealMapper.update(setmeal);
    //    拿到套餐id
        Long setmealId = setmeal.getId();
    //    删除套餐和菜品的关联关系，操作setmeal_dish表,删除操作
        setmealDishMapper.deleteBySetmealId(setmealId);
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes !=null && setmealDishes.size() > 0 ){
            setmealDishes.forEach( setmealDish -> {
                setmealDish.setSetmealId(setmealId);
            });
        }
        setmealDishMapper.insertBatch(setmealDishes);



    }
    //套餐起售停售
    @Override
    public void startOrStop(Integer status, Long id) {

        if (status == StatusConstant.ENABLE){
            List<Dish> dishList =dishMapper.getBySetmealId(id);
            if (dishList != null && dishList.size() > 0)
                for (Dish dish : dishList){
                    if (dish.getStatus() == StatusConstant.DISABLE)
                        throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                }
        }
        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
        setmealMapper.update(setmeal);

    }
    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }

}
